
where \(\mu ^{(m)}\)  is the \(m\) -th factorial measure of \(\mu \) ; see [1]}.
This follows by induction, using that
\(\kappa _{m+1}(x_1,\ldots ,x_{m+1},\mu )=\kappa _m(x_1,\ldots ,x_m,\mu )\kappa (x_{m+1},\mu +\delta _{x_1}+\cdots +\delta _{x_m}).\) 
